Pivot once about the circled element in the simplex tableau, and read the solution from the result. 
A. x1 = 6, s1 = -6, z = 6; x2, x3, s2 = 0
B. x1 = 12, s1 = 42, z = 12; x2, x3, s2 = 0
C. x1 = 12, s1 = 6, z = 12; x2, x3, s2 = 0
D. x1 = 12, s1 = -6, z = 12; x2, x3, s2 = 0
Answer: D
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Find only the rational zeros.f(x) = x4 - 10x3 + 6x2 + 30x - 27
A. 9, -1 B. 9, 1 C. -9, 1 D. No rational zeros
Use Gauss-Jordan elimination to solve the linear system and determine whether the system has a unique solution, no solution, or infinitely many solutions. If the system has infinitely many solutions, describe the solution as an ordered triple involving variable z. x + y + z = 7 x - y + 2z = 7
A. (8, -3, 2)
B. 
C. (-3z + 14, 2z - 7, z)
D. (4, 1, 2)
Information is given about a polynomial f(x) whose coefficients are real numbers. Find the remaining zeros of f.Degree 5; zeros: 1, i, -2i
A. -1, -i B. -1, 2i C. -1, -i, 2i D. -i, 2i
Multiply and simplify.
A. 
B. 
C. 
D. 